It was used by this paper, the ecological footprints of Tianjin were calculated in the period of 1996～2005 on the basis of the statistical yearbooks of recently years.
本文就是采用该方法,以天津市近年统计年鉴的数据为依据,对天津市1996～2005年的生态足迹进行了计算。
参考来源 - 天津市生态足迹的计算与动态分析·2,447,543篇论文数据，部分数据来源于NoteExpress
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